Pulse transfer devices

Claim 1

A PULSE TRANSFER DEVICE COMPRISING A SWITCHABLE TWO-STATE ELEMENT, A SOURCE OF PERIODIC PULSES, MEANS FOR APPLYING PERIODIC PULSES FROM SAID SOURCE TO SAID ELEMENT TO CAUSE SAID ELEMENT TO SWITCH FROM A FIRST STATE TO A SECOND STATE, MEANS RESPONSIVE TO SAID PERIODIC PULSES FROM SAID SOURCE FOR SELECTIVELY PRODUCING DATA SIGNALS REPRESENTING SAID FIRST STATE TO BE REGISTERED IN SAID ELEMENT, A TRANSISTOR AMPLIFIER, AN INPUT CIRCUIT CONNECTED FROM SAID PRODUCING MEANS ONLY TO SAID AMPLIFIER FOR APPLYING SAID DATA SIGNAL THERETO TO CAUSE SAID AMPLIFIER TO PRODUCE OUTPUT SIGNALS, SAID INPUT CIRCUIT BEING INDEPENDENT OF ANY COUPLING TO SAID ELEMENT, AN OUTPUT CIRCUIT FOR APPLYING SAID OUTPUT SIGNAL TO SAID ELEMENT TO REGISTER SAID FIRST STATE THEREIN, SAID TRANSISTOR AMPLIFIER INCLUDING MEANS FOR STORING AN APPLIED DATA SIGNAL FOR A PERIOD WHICH CONTINUES AFTER THE TERMINATION OF THE PERIODIC PULSE IN RESPONSE TO WHICH ITS WAS PRODUCED, THEREBY TO REGISTER SAID FIRST STATE IN SAID ELEMENT AFTER SAID TERMINATION, A SOURCE OF TURN-OFF PULSES WHICH OCCUR IN THE INTERVALS BETWEEN SAID PERIODIC PULSES, AND MEANS FOR APPLYING SAID TURN-OFF PULSES TO SAID TRANSISTOR AMPLIFIER SO AS TO TERMINATE SAID OUTPUT SIGNALS.